2620: disable pdfjs scripting, v88 final

Thorin-Oakenpants · web-flow · commit da9f91286217 · 2021-04-23T14:25:54.000Z
diff --git a/user.js b/user.js
@@ -1,7 +1,7 @@
 /******
 * name: arkenfox user.js
-* date: 06 April 2021
-* version 88-alpha
+* date: 23 April 2021
+* version 88
 * url: https://github.com/arkenfox/user.js
 * license: MIT: https://github.com/arkenfox/user.js/blob/master/LICENSE.txt
 
@@ -1163,17 +1163,18 @@ user_pref("webchannel.allowObject.urlWhitelist", "");
  * [3] CVE-2017-5383: https://www.mozilla.org/security/advisories/mfsa2017-02/
  * [4] https://www.xudongz.com/blog/2017/idn-phishing/ ***/
 user_pref("network.IDN_show_punycode", true);
-/* 2620: enforce Firefox's built-in PDF reader [SETUP-CHROME]
+/* 2620: enforce PDFJS, disable PDFJS scripting [SETUP-CHROME]
  * This setting controls if the option "Display in Firefox" is available in the setting below
  *   and by effect controls whether PDFs are handled in-browser or externally ("Ask" or "Open With")
  * PROS: pdfjs is lightweight, open source, and as secure/vetted as any pdf reader out there (more than most)
- *   Exploits are rare (1 serious case in 4 yrs), treated seriously and patched quickly.
+ *   Exploits are rare (one serious case in seven years), treated seriously and patched quickly.
  *   It doesn't break "state separation" of browser content (by not sharing with OS, independent apps).
  *   It maintains disk avoidance and application data isolation. It's convenient. You can still save to disk.
  * CONS: You may prefer a different pdf reader for security reasons
  * CAVEAT: JS can still force a pdf to open in-browser by bundling its own code (rare)
  * [SETTING] General>Applications>Portable Document Format (PDF) ***/
 user_pref("pdfjs.disabled", false); // [DEFAULT: false]
+user_pref("pdfjs.enableScripting", false); // [FF86+]
 /* 2621: disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS] ***/
 user_pref("network.protocol-handler.external.ms-windows-store", false);
 /* 2622: enforce no system colors; they can be fingerprinted
